Passage type drawing frame for spinning fibers of various staple dimensions



. Jan. 30, 1940. H. VKLUFTINGER Filed Feb. 24, 1937 4 Sheets-Sheet 1 1 /n rental: HERMANN KLUFTINGER by v molunzy Jan. 30, 1940- H. KLUFTINGER Filed Feb. 24, 1937 4 Sheets-Sheet 2 Fig.7

. lnvento/z- HERMANN KLUFTINGER Jan. 30, 1940. L F NGER 2,188,408

PASSAGE TYPE DRAWING FRAME FOR SPINNING FIBERS OF VARIOUS STAPLE DIMENSIONS 4 Sheets-Sheet 3 Filed Feb. 24. 1937 Fig.0 I

I lm/enzon' r LnJ 4 HERMANN KLUFTINGER.

. ATTORN s1 Jan. 30, 1940. v H. KLUFTINGER Filed Feb. 24, 1937 4 Sheets-Sheet 4 HERMANN Ku/rrmem b Nwem 5. WM

nfloluey Patented Jan. 30, 1940 UNITED STATES,

PATENT OFFICE PASSAGE vTYPE DRAWING FBAltIE' FOB SPINNING FIBERS OF -VARIOUS STAPLE DIMENSIONS Hermann Kluftinger, Augsburg, Germany Application February 24, 1937, Serial No. 127,386

In Germany February 8, 1936 ;4 Claims.

The present invention relates to drawin frames for spinning flbers, and has for its object to provide an organization which is adjustable for various staple lengths. 5 Another object of the invention is to provide an arrangement whereby a drawing frame of the gripping type may be changed to a drawing frame of the passage type and vice versa without requiring fundamental alterations of the drawing frame" 10 structure.

A further object of the invention is to provide means in a. drawing frame of the said type for preventing a stopping of the entire machine in the event of a lap formed around the front roller.

15 The invention broadly consists in means for positively drivinga belt or sleeve as used in mac nfis f the said type for feeding the roving to a pair of front drawing rollers, and in means for adjusting. the distance of such belt drive from 20 said front rollers. Said means comprise a removably insertable member in the roller stand between the lower front drawing .roller and the driving roller of said belt, said means being so shaped as to form the bearings for elements such as needle rollers having the purpose of guiding, deflecting and or tensioning the belt.- In certain embodiments of the invention two members of the mentioned type are rigidly connected by a barshaped part, whereby said two members may be 30 inserted in two coordinated roller stands, said bar-shaped part bridging the rollerstands and.

45 Fig. 2 is a side view of slightly modified parts,

of the drawing frame on a larger scale,

Fig. 3 is a front view of the parts shown in Fig. 2, Fig. 4 is a sectional view along the line IV'.-IV 50 of Fig. 3, 1

Fig. 5 is a sectional view along line V--V'of Fig. 3, Fig. 6 shows a modified drawing frame according to the present invention, the small leather belt 55 beingparticularly'long, I

Fig; Tis a sectional view'oi' a detail of the modification illustrated inFig. 6,

Fig.- 8 shows another modification, I

Fig. 9 is a'front view, and Fig. 10 isa side view of adetail of the modification shown in Fig. 8, 5

Fig. -11 is a section along the line )fl-XI of the Figs. 12, 1'3 and 14 illustrate several possibilities of adjustment,

Fig. 15 is a side view of the deflector needle 1 roller. I

Referring now to Fig. 1-, rollers or cylinders I, II

and III are supported by two roller stands I.

The front cylinder I has a fixed bearing in each stand, whereas the "cylinders II and IIIare .jour- 15 nailed in sleds or carriages 2 displaceable lengthwise on said roller stands. This arrangement allows to move the sleds 2 back and forth, in the direction of the arrow A. At the front end of the guide provided for this purpose in each roller .20

stand I, there is a notch or recess 3 the front wall of which serves as a stop for the sled inits forward end position. Rollers IV, V and VI are provided on top of rollers I, II and III respectively,

roller IV being an upper drawingroller coordinated to the lower drawing roller I, and rol1er,V being a feeding roller to cooperate with the feeding belt I I. Said belt or hose l I is passed around middle roller II which serves as the driving roller for said belt. The belt forms a moving board for feeding the roving from roller HI to roller I. Means are pro videdfor guiding and tensioning belt II and forsimultaneously deflecting it in such a manner that a large arc of contact at roller II and, thus, an absolutely positive drive of the 3 belt is safeguarded. In the illustrated embodimen't, said means comprise a bar-like member 5 having at its ends two base platesl. The. bar with its base plates formsa substantially U- shaped unit. The base plates are recessed in re- 40 lation to the'main portion of bar 5, and may be inserted into the recesses 3 of two roller stands I respectively, the bars fitting in between-said roller stands and bearing against them with their flank portions-l0 below .the base plates 4. Thus, bar 5 may be heldin true parallelism with rollers I, II, III, and the base plates at right anglesthereto.

Insertion of the base platesin the recesses 3 may" be accomplished when the. sleds are withdrawn in the direction of arrow A. c In the middle of bar 5, 'asupport 6 may be provided.- The base plates 4 and support 6 contain bearings formed by half-round recesses I and-8 for rollers or needles9 and Ill. The nee- -dles have-smooth surfaces and small diameters, 6

and may be freely placed into the bearing recesses 1 and 8. The width of a base plate 4 may equal the width of its coordinated recess 3, and it is obvious that the tension of the belt depends upon the location of the bearing recesses for the needles in the base plates, and the diameter f-the needles journalled therein. Since the base plates are exchangeably inserted in the roller stands, suitable conditions of the belt drive can be obtained in each instance.

In order, however, to facilitate the adjustment, I prefer to make the recesses 3 wider than the base plates 4 as clearly shown in Fig. 2. In thisflgure sled 2 is retracted and the base plate 4 and needles 9 and III are inserted pre paratory to the tensioning'of belt II. The base plate is in a rearwardly slanting position. When sled 2 is shifted from the position of Fig. 2 in a forward direction indicated by arrow B, it engages base plate 4 which will be swung and erected in the way indicated by arrow C under the action of the forward movement of the sled. At the same time the roller Ill engages the leather belt I I in the direction of the arrow D. Thereby the arc of engagement of the belt with the middle cylinder 11 will be increased a certain extent, and the leather belt will be correspondingly. tensioned. In consequence thereof, the drive of the belt is absolutely positive without requiring weighting rollers or the like to safeguard a constant and uniform movement of the belt. The arrangement of the needle 9 near the front edges of the base plates permits to extend the moving board formed by the belt, very close to the frontdrawing roller or cylinder I.

Although the rollers 9 and II) are not completely encompassed by closed bearings, they are safely retained in position as they are held and guided by adjacent parts such as the roller stands, the sleds and the leather belt.

0n the other. hand, a lap accidentally formed about cylinder I will lift needle 9 out of its bearing recesses, thus interrupting the action of the belt without stopping or disturbing the operation of other parts of the machine. Similarly, the tension of the belt may be released during intermissions of the operation, by shortly reversing the machine whereby needle 9 is caused to leave itsbearing recesses I.

If the leather belt drawing frame described hereinbeforeis to be changed into a gripping type drawing frame, the reverse order of operation is to be followed. The sleds 2 are to be withdrawn, and the belt and the bar with the base plates removed. This being done, the drawing frame mechanism may be adjusted and operated as a conventional gripping type drawing frame. Thus, the present invention ofl'ers means its: transforming a gripping type drawing frame into a belt type drawing frame and vice versa, without any basic changes of structural characteristics.

In the event that an especially long leather belt is to be used, the upper part of the base plate may have a correspondingly wide exten-- sion. This is shown in Fig. 6, where the belt is denoted with Ill, said, extension with I20, and said base plate proper with I04. In this case, a supporting board or table I! may be inserted into the base plates for cooperation with a top roller It.- The leather hose or belt is .held in position between said table I! and said roller it, although "it may have a slight slack at l4 (see Fig. 7) owing to the absence of tension between imthe lower roller 1'1 and the top roller l3.

' In order to obtain an elastic pressure, it is advisable to apply resilient means for deflecting -ing needle l0, shown in Figs. 1, 2, 6 and 7. The

leaf spring is attached to the base plate bar 205 in such a manner that it resiliently bears against the belt in the direction of the belt motion. At its end IS, the leaf spring is appropriately curled, the spiral end engaging the small leather hose. As shown in Figs, 8 and 10, the base plate 204 may have a recess 240 in addition to recess 208 for needle 9. Recess 240 is provided in the top portion of plate 204 and serves to accommodate a roller 250 cooperating with the belt to feed the roving to the front drawing rollers.

In the drawing frame, according to my invention, means may be provided to adjust various distances of the rollers without requiring essential structural changes of the machine. Such means may consist in shims applied in connection with said base plates, as illustrated by Figs.

12 to 14. A shim I! inserted in front of the base plate enlarges the main drawing range, increases the distance C and simultaneously the distance D between the leather belt deflecting roller 9 and the gripping point of the front cylinder I.

By placing a shim or liner l8 behind the base plate, an increase of the main drawing range may be obtained, 1. e., the distance C between the front cylinder and the middle cylinder will be increased without alteration of the distance D between the gripping point of the front cylinder I and the needle 9. Simultaneously the board formed by the leather belt ll will be lengthened.

A simultaneous insertion of shims l1 and I8 results in an increase of the total drawing range,

at the same time the distances C, D and E being modified. A drawing frame according to my invention may be advantageously used in the spinning of fibrous materials of various staple lengths. It is particularly useful in the spinning of long stapled material together with short staples. Owing to the absolutely positive drive of the belt in the absence of weighting rollers, the

belt is advanced with a very constant speed neces-- sary to safeguard the forwarding of uniform quantities of the roving to the front drawing cylinders.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is:

1. In a drawing frame for spinning fibers, the

combination of two roller stands in parallel ar-' rangement, drawing means including a lower drawing roller, a lower driving roller, a feeding belt passing around said driving roller, a'feeding roller cooperating with the upper run of said belt, a member comprising a bar-like main portion and two end portions, said endportions being removably mounted in said roller stands respectively between said lower drawing roller and said lower driving roller, means in connection with said end portions for guiding said "belt in operative relation to said lower drawing roller, and other means in connection with said member and in engagement with the lower run of said belt for deflecting said belt to increase its arc of engagement with said driving roller.

2. A device as claimed in claim 1 in which the end portions of said member include surfaces perpendicular to the length of the main portion of said member, said surfaces being adapted to bear laterally against said roller stands to safeguard parallelism of said member with said including a' lower drawingroller, a driving roller,

a feedingbelt passing around said driving roller, a feeding roller cooperating with said belt, a member removably inserted in saidroller stand between said drawing roller and said driving roller, said member having a first recess in its front top portion and a second recess in its rear portion, said recesses being open towards thefront and top and towards the rear side respectively, a needle roller in said first recess for guiding said and another needle roller in said second recess for deflecting said belt to increase'its arc of engagement' with-said driving roller. r c

4. In a drawing frame for spinning fibers, the combination of a roller stand, drawing means including a lower front drawing roller journaled in said stand, a sled movable, behind and in a direction at right angles to saiddrawing roller, said roller stand including guiding means for said sled and. having a recess between said drawing roller and said guiding means, a driving roller journaled in said sled, a feeding belt passing around said driving roller, a feeding roller cooperating with said belt, a member inserted in said recess, the width of'said'member beingsmaller than that of said recess, a needle roller journaled at the front top portion of said member for guid ing said belt in operative relation to said drawing roller, and a means in connection with said member at a lower level than and in the rear of said needle roller, said means being adapted to engage said belt from below, whereby said belt can be deflected to increase its are of engagement with said driving roller when said member is tilted from a rearwardly slanting into an erected position.

5. A device as claimed in claim 4 in which said member includes a portion protruding into the path of said sled when the member is inserted into said recess, whereby said member may be erected from a rearwardly slanting position by a forward movement of said sled.

6. In a drawing frame for spinning fibers, the

combination of a roller stand, drawing means including a lower drawing roller journaled in the front portion of said roller stand, a driving roller in the rear of said drawing roller, a feeding belt passing around said driving roller, a member removably inserted in said -roller stand between said drawing roller and said driving roller, said member having a rearward extension, a needle roller journaled at the front top portion of said member to guide said belt in operative relation to said drawing roller, means at the rear end of said extension for deflecting said belt to increase its arc of contact with said driving roller, a board removably inserted in the top of said extension to support said belt, and a cooperating roller on top of the belt portion supported by said board.

'7. In a drawing frame for spinning fibers, the combination of a roller stand, drawing means including a lower drawing roller j'ournaled in the front portion of said roller stand, a lower driving roller in the rear of said drawing roller, a feeding belt passing around said driving roller, an upper feeding roller in operative relation to as movably mounted said lower drawing roller and said lower driving said driving roller, a needle roller journaled in, the front top portion of said member forv guiding said beltin operative relation to said drawing roller, means in connection with jsaid member for deflecting said beltuto increaseitsarc of engagement with on the top of said member, said other roller being roller, and another roller journaled' belt Inear said driving roller, a member rein said 'rollerstand between.

adaptedtobear. upon said belt from the upper f outside nearisaidldrawing roller; v

.8. ma drawing framexf 'r, spinning fibers, the combination of two roller stands in parallel arrangement drawing means'lincluding a lower drawing roller anda driving'rollerjjournaled therein, affeeding belt passing around said driving roller, a feedingroller; cooperating with" said belt in operative relation to said drawing roller, p

'. tion and" two end portions, said end portions being removably inserted in said roller stands'; respectively between said drawing roller and said driving -ro1ler, said bar-like portion including a projection between said roller stands, a" guiding roller 'journaled in both, said end portions and belt, amember comprising a bar-dike middle porin said projection to hold said belt in operative said belt to increase its iarcjof engagement with said driving roller.

, 9. In a drawing frame forspinningfibers, the

combination of a roller stand, drawingflmeans.

including a lower drawing roller j'ournaled in the front portion of said roller stand,a lower driving roller in the rear of saiddrawin'g roller, a

feeding belt passingaroundsaid driving'roller, a feeding roller cooperating with said belt said roller stand having a recess between said lower drawing roller and said driving roller, a member removably mounted in said recess of the roller stand between said drawing roller and said driving roller, a needle roller removably inserted and Journaled in the front portion of said member for guiding said belt from the inside near said drawing roller, and resilient means in connection with said member and engaging the belt from its lower outside for deflecting said belt to increase its arc of engagement with said driving roller.

10. In a drawing frame for spinning fibers, the combination of two roller stands in parallel arrangement, drawing. means including a lower drawing roller iournaled in the front portions of said roller stands, a driving roller in the rear of said drawing roller, a feeding belt passing around said driving roller cooperating with said belt, a member comprising a main portion and two endportions, said end portions being removably inserted in said roller stands respectively between said drawing roller and said driving roller, a needle roller journaled in the top front portions of said member to guide said belt from the inside near said drawing roller, and a leaf spring secured to the main portion of said member, the free end of said spring being adapted to bear against the lower outside of said belt in the direction of its movement, so as to defiect the belt to increase its arc: of engagement with said driving roller.

'11. In a drawing frame for spinning fibers,

the combination of a roller stand, drawing means including a lower drawing roller journaled in the front portion of said roller stand, a driving roller in the rear of said drawing roller, means for adjusting the distance between said drawin roller and said driving roller, said'roller stand having a recess between said rollers, a feeding belt passing around said driving roller, a feeding roller cooperating with said belt, a member inserted in said recess, the width of said member being smaller than that of said recess, a needle roller journaled at the front portion of said member to guide said belt from the inside near said drawing roller, means in connection with said member for deflecting said belt to increase its arc of engagement with said driving roller, and shims insertable in said recess for adjusting the position of said member relatively to said drawing and said driving rollers.

12. In a drawing frame for spinning fibers, the combination of a roller stand, drawing means including a lower drawing roller, a driving roller, a feeding belt passing around said driving roller, a feeding roller cooperating with said belt, said roller stand having a recess between said lower,

drawing roller and said driving roller, a member removably supported in said recess of the roller stand, said member having a recess in its top portion, means carried by said member in said recess of its top portion for guiding said belt in operative relation to said drawing roller, whereby said means with said belt may be lifted out of engagement with said member, and other'means carried by said member and being in engagement with the lower run of the belt for deflecting said belt to increase its arc of engagement with saiddriving roller.

13. In a drawing frame for spinning fibers, the combination of a roller stand, drawing means including a lower front drawing roller journaled in said stand, a sled movable behind and in a direction at right angles to said drawing roller, said roller stand including guiding means for said sled and having a recess between said drawing roller and said guiding means, a, driving roller Journaled insaid sled, a feeding belt passing around said driving roller, a feeding roller operating with said belt, a member removably supported in said recess of said roller stand, said roller.

14. In a drawing frame for spinning fibers, the combination of a roller stand, drawing means including a lower drawing roller, a driving roller, said roller stand having a recess between said lower drawing roller and said driving roller, a feeding belt passing around said driving roller, a feeding roller cooperating with said belt, a member removably supported in said recess of said roller stand, said member having another recess in its fronttop portion near said drawing roller, a needle roller inserted in said last-mentioned recess to guide said belt in operative relation to said drawing roller, said last-mentioned recess being open towards the top and so constructed and arranged that the pull of the belt tends to urge said needle roller .into said last-mentioned recess when the belt is moving in the operative direction and that a force occurring when the belt is moving in the opposite direction tends to lift the needle roller out of said last-mentioned recess, and means in connection with said member for deflecting said belt to increase its arc of engagement with said driving roller.

HERMAN N KLUF'I'INGER. 

